package com.shoute.ai.repository;

import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Slf4j
@Component
public class InMemoryChatHistoryRepository implements ChatHistoryRepository {

    private Map<String, List<String>> chatHistory = new HashMap<>();


    @Override
    public void save(String type, String chatId) {
        /**
         if (chatHistory.containsKey(type)) {
         chatHistory.put(type, new ArrayList<>());
         }
         List<String> chatIds = chatHistory.get(type);
         **/
        //简化写法
        List<String> chatIds = chatHistory.computeIfAbsent(type, k -> new ArrayList<>());
        if (chatIds.contains(chatId)) {
            return;
        }
        chatIds.add(chatId);
    }

    @Override
    public List<String> getChatIds(String type) {
        /**
         List<String> chatIds = chatHistory.get(type);
         return chatIds == null ? new ArrayList<>() : chatIds;
         **/
        //简化写法
        return chatHistory.getOrDefault(type, List.of());
    }
}
